Drain cock



March 10. 1925.

DRAIN cock Filed May 20, 1920 Patented Mar. 10, 1925,

UNITED STATES PATENT OFFICE.

ELDON Pr GUNIDRY AND CLIFFORD A. BOOM, OF FLINT, IIIICHIGAN, ASSIGNORSTO GENERAL MOTORS CORPORATION, OF DETROIT, MICHIGAN, A. CORPORATION OFDELAWARE.

DRAIN COCK.

To all whom it may concern:

Be it known that we, ELDoN P. GUNDRY and CLIFFORD A. BOOM, both citizensof the United States. and residents of Flint, county of Genesee, andState of Michigan, have invented certain new and useful Improvements inDrain Cocks, of which the following is a full, clear, concise, and exactdescription, such as will enable others skilled in the art to which theinvention relates to make and use the same, reference being made thereinto the accompanying drawings, which form a part of this specification.

Our invention relates to drain cocks particularly applicable for use indraining the oil from the crank case or the cooling liquid from theradiator of a self propelled vehicle,-

although the same is capable of use in other relations and in fact inany mechanism or device wherein a drain cock has to be used.

The principal object of our invention is to provide an improved draincock which will be simple in construction and effective for the purposefor which it is designed, while at the same time it will be more compactthan drain cocks as heretofore usually constructed have been and willtake up less room in the rather crowded space in which such drain cocksare located than has commonly been the case in drain cocks of the typeand construction heretofore in common use.

A further object of our invention is to provide an improved drain cockin which the liquid flowing from the receptacle to be drained isdischarged through an opening provided in one end of the rotating valvethereof, as distinguished from through the valve and then through apassage provided in the shell or casing ofthe device, as has heretoforecommonly been the case.

With the above and other objects of invention in view our inventionconsists in the improved drain cock illustrated in the accompanyingdrawings and hereinafter described and claimed; and in such variationsand modifications thereof as will be obvious to those skilled in theart, so long as such Figure l is a view showing our improved drain cockin section, the valve thereof being closed.

Figure 2 is a similar view showing the valve in its open osition.

Our improved drain cock comprises a main body portion, shell or casing 8adapted to be secured to a receptacle to be drained as by riveting orsoldering the same thereto, to.

which end said casing is provided with a seat shown as made up ofportions 9, 1O arranged substantially at right angles to one another,and which seat portions fit against the lower corner of the chamber tobe drained and are soldered or otherwise secured thereto to therebyfasten the drain cock to the chamber to be drained, It will beappreciated, however, that the drain cock may be otherwise secured tothe receptacle or chamber as the invention, regarded in its broaderaspects, is not concerned with the particular manner in which the draincock is secured to the receptacle to be drained. U

Located within the shell or casing 8 is a vertically disposed valve seatcircular in cross-section, and preferably slightly conical in form, withwhich seat a portvll communicates and which port is in opencommunication with the interior of the receptacle or chamber to bedrained through an opening 12 provided in the wall 4 of said chamber. a

The valve of our improved drain cock is designated by the referencenumeral 13, the same being conical in form to fitwithin the conical seatof the body or casing above referred to and the stem 14 thereofextending upward and being provided with a bar 15 or equivalentoperating means whereby the valve may be conveniently rotated to openand close the same. The valve in'question is held in contact with itsseat by means of] a spring 16 which surrounds the stem 14 and actsbetween two washers 17, 17 the lower" one resting upon the upper end ofthe shell or casing 8 and the upper one resting against the cross-bar15. The spring therefore acts between the abutments provided by r thewashers 17, 17 to force the valve 'upward and maintain it in closecontact with its seat and thereby maintain the tightness of the valvethroughout the life thereof, thus providing automatic compensation forsuch wear as may occur when the valve is in use.

The valve 13 is provided with a port 18 adapted to communicate with theport 11 in the manner shown in Figure 2 when theliquid is to be drained,and to be out of com- In view of the premises it will be appreci- ,ated.that our. improved drain cock can be readily secured to the verticalside wall or a receptacle to be drained such, for example,

as the crank case otvan engine or the lower water chamber of a radiator,and that the liquid will' be discharged in a downward direction as isdesirable in such devices,

without, however, providing the shell'or casmg of the cock w th adowmvardly bent spoutorbibb ashas hereto'fore usually been the case; thedownward direction of the outflowing. stream being produced bydischarging the same vthrough a vertically disposed passage provided inthe rotating valve of the cock. This construction provides a drain cockwhich is materially more com pact than has heretofore con'nnonly beenthe case, for the reason that no projection is present upon the shell orcasing of the cook; which t'eature ot compactness is a matter ofimportance in power plants of motor driven vehicles as there is oftenvery'little room Within which to install and provide for the operationor the drain cock as portions. of the engine orotherinechanism of thesaid plant are Often located in vasclose proximity as possible.

increased wit The fact that the port 18 throughwhich liquid fiowsdoesnot extend through the valve providesa construction in which a muchlarger port area may be secured'than would be the case it the sameextended entirely through the valve and communicated ,wlthan outletpassage located opposite the port 11, and the downwardly dischargingpassage-forthe liquid present within the valve provides a drain cock inwhich the "valve thereof maybe rotated throughout 180 degrees to openthe same; thus providinga drain cock in which the ln'terior surface ofthe casing over whichthe port 18 is moved when the valve is closed, seeFigure 1, 1S

located opposite the inlet port 11, whereby "the flowof liquid iseffectively prevented even though the port 18 is of large area.

Incidentally, theprovision of a drain cool: having structural featuressuch that the area of the outlet 1passage therethrough may be ioutdanger of leakage pro vides a device in which the velocity of flow ofliquid out from the chamber being drained will be increased, and a rapiddraining or the liquid secured, which is obviously a teatureotadvantage. I

Having thus described and explained our invention,'we claim and desireto secure by Letters Patent:

1. A drain cock comprising a body portion having vertically disposedvalve seat conical in form and smallest in diameter at its upper end,fitttt'filllnglhtllls whereb -said body portion may be secured to achamber to be drained, and a port through which communication isestablished between' said chamber and said valve seat; a conical valverotatable within thesaid valve seat and having aport adapted tocommunicate with said first mentioned port and a vertically arrangedoutlet passage leading downward "from said port and discharging throughthe lower end of said valve; a stemextending upward from said valve; aspring surrounding said valve stem; a washer interposed between thelower end of said spring and the upper end of said body portion; asecond wash-er surrounding said valve stem and against which the upperend of said spring abuts; and an operating handle locatcdadjacent theupper end of said valve stem and against which said second mentionedwasher abuts.

2. ii drain cock comprising body portion having a vertically disposedvalve seat conical in form and smallest in diameter at its upper end, anattaching-seat having substantially horizontal and vertical portionsadapted to abut against corresponding walls of areceptacle and a portconnecting said two seats; a conrcal'valve rotatable within "the saidvalve seat and having a port adapted to communicate with the said'lirstmentioned port, and a vertically arranged outlet passage leadingdownward from said valve port and discharging through the lower end ofsaid valve; a stem extending upward from said valve; a springsurrounding said valve stem; a washer intesposed'between the lower endof said spring and the upper end of said body portion a second washersurrounding said valve stem and against which the upper end o t saidspring abuts; and an operating handle 10- cateda'djacent the upper endof said valve stem and against which said second mentioned washer abuts.

In testimony whereof we atlia our signatures. I

' ELDjON GUNDRY.

omrronn BOOM;

